Meet the Cast of 'Mean Girls' the Musical Movie

Spivey, who played Damian Leigh in the film's Broadway adaptation, is reprising the role in the movie musical. A best friend to Janis Ian, Damian is also one of the first people Cady meets on her very first day at North Shore High. Spivey's most notable roles include Mean Girls the Musical and The Amber Ruffin Show.

Cravalho is taking on the role of Janis Ian, Regina George's foe, and the very first person Cady befriends after transferring to North Shore High School. Cravalho made her acting debut as the voice of the titular character in 2016's Moana. She went on to star in the NBC drama series Rise, Netflix's All Together Now and the Hulu romantic comedy Crush.

Briney will play Cady Heron's love interest and on-again/off-again boyfriend to Regina George, Aaron Samuels. Briney is best known for his work in the series The Summer I Turned Pretty, as well as the 2020 film Dalí Land.

Fischer will be taking on the role of Ms. Heron, a role originally played by Ana Gasteyer in the original film. Viewers best know Fischer as Pam Beesly from NBC’s The Office, which earned her a Supporting Actress in a Comedy Series Emmy nom in 2007. Her feature credits include Blades of Glory, Clint Eastwood’s The 15:17 to Paris, Solitary Man, Mike White’s Brad’s Status, Hall Pass and A Little Help.

Vandanapu will complete the trio as Karen Smith. Her most recent projects include the Rebel Wilson-led Senior Year as well as a part in season 2 of The Sex Lives of College Girls.

Wood is taking on the role of Gretchen Weiners, toaster strudel heir and member of The Plastics. Wood is best known for her work in Love, Victor, The Real O'Neals and The New Normal.

Fey, who wrote both the original film and the musical, is returning for the movie musical adaptation. While it's not clear what role she'll take on, she famously appeared as math teacher Ms. Norbury in the 2004 film.

Meadows, meanwhile, famously portrayed the role of North Shore High's principal, Mr. Duvall. During a recent visit to Late Night With Seth Meyers, Fey, who did not confirm what roles the two will be playing, referenced her and Meadows' roles by joking, "We couldn't age out, teachers work forever. I want it to be like when Gilligan from Gilligan's Island was at a trade show and you're like, 'Oh, he looks so old in his little hat.'"

Philipps will step into Amy Poehler's shoes, playing Mrs. George, Regina George's mother, the role the SNL alum originated in the 2004 flick. Philipps has had a lengthy career, starring in shows like Dawson's Creek, Cougar Town and Girls5eva, hosting her own talk show, Busy Tonight, and appearing in such films as Made of Honor and I Feel Pretty.

Rice will be taking on the lead role of Cady Heron, which was made famous by Lindsay Lohan. Rice is an Australian actress with international credits including Spider-Man: Far From Home and Black Mirror.

Rapp will be returning as Regina George after previously taking over the role on Broadway. Fans may know Rapp best for her role on HBO Max's The Sex Live of College Girls. Rapp spoke to ET about joining the movie. "It's going to be a very exciting, authentic take on what Mean Girls is and what Mean Girls means to us as kids," the 23-year-old actress said.